Rotary plow.



No. 633,770. Patented sept. 26, |899.

D. WDRTHINGTUN & C. PETEBSEN.

BUTABY PLOW.

(Application led Ovt. 15, 189B.

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noTAnY PL'ow. (Appucazin mea oct, 15, 189s.)

2 Sheets-Sheet 2` (No Model.)

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IINirnD STATES ATENT- trici-t..

DALL XVORTHINGTON AND CHRISTIAN PETERSEN, OF AL'IIMORE, MARY- LAND, ASSIGNORS TO TI'IEMSELYES ANI) DIVEN BROTHERS d; OO., OF

SAME PLACE.

ROTARY PLOW.

SPECIFICATION forming part of Letters Patent No. 633,770, dated September 26, 1899.

Application filed October l5, 1898. Serial No. 693,610. (No model.)

To all whom, it may concern:

Beit known that we, DALL WonTHiNeToN and CHRISTIAN PETERSEN, citizens of the United States, residing at Baltimore, in the State of Maryland, have invented certain new and useful Improvements in Rotary Plows, of which the following is a specification.

This invention relates to a revolub'le plow Yfor plowing land.

The object of the invention is to provide a land-plow having a rotary head with a plural number of spades and mounted on a carriage to be drawn by horses or other power.

The invention is illustrated in the accompanying drawings, in which- Figure lis a top plan view ofthe plow. 2 is a side elevation ofthe plow. Fig. 3 shows two views in detail of the pawl-andratchet I device on one of the wheels. Fig. 4 is a front 2o elevation of the plow and in full lines shows the position of the plow when cutting a furn row and in broken lines shows the raised po sition the plow takes when it is out of the ground. Fig. 5 is a perspective View of the shell or cylinder of the plow and shows how the spades are attached.

The rotary plow proper, A, comprises a wheel-head Ct, (see Figs. l and 2,) on which is secured a circularshaped cylinder' or shell B, havinga zigzag-rim formation. (Shown in Figs. 2 and 5.) One face c of each zigzag is broader than the other face c'. The broad face has bolt-holes d. There may be any desired number of zigzags. In the present instance there are sixteen. The spades e are flat steel plates having a cutting edge e', which cutsintotheearth,andbolt-holes. Onespade is secured on the broad face of each zigzag by l bolts dl.

4o Ythile the fiat side of each spade is in contact with the broad face c of one zigzag the heel or edge of the spade rests or abuts against the narrow face c of the next adjoining zigzag. By this construction the spades are rmly seated and the strain on the bolts d is minimized, and all the spades project tangentially. Another result of this construction of cylinder or shell B with the zigzag-rim formation and iiat metal plates e in tangential planes is that a space or pocket is formed between Fig..

l every two adjoining metal plates e, into which pocket the earth cut by the plate enters, said earth being carried completely over by the rotation of the plow and dumped behind, as hereinafter set forth.

The rotary plowAis secured rigidly on the end of a pivoted shaft F, the said pivoting allowing the end of the shaft to which the plow A is'attached to be raised and lowered, as indicated in Fig. 4. The end of the shaft F has on it a linob or ball, (indicated in Figs. l and 4,) and this ball tits in a socket on a suitable bearing orhanger G,which is attached to a horizontal frame H, supported on an axle or shaft I, mounted on running wheels J. A pole fis attached to the frame, and the design is to have the machine drawn by horses.

It will be seen the end of the shaft F which carries the rotary plow projects at the side of the machine beyond the ruuningwheelJand that therefore the rotary plow A has position outside of or beyond the said running wheel, which supports the machine.

A Ywell-known pawl-and-ratchet device is provided where each running wheel connects with the axle or shaft to make a rigid connection between the wheel and axle when the machine is drawn forward. Thereby the rotation ofthe running wheels J causes the axle or shaft also to rotate; but when the machine is backed the wheels only will rotate. This pawl and ratchet is shown in Fig. A collar g is rigid on the axle I, and a pawl 71, is pivoted on the collar and pressed by a spring 7L. The hub of the wheel J has a circular recess t', and ratchet-teeth c" are around the internal rim of said recess, andthe pawl 7L, carried by the axle, engages these ratchet-teeth when the machine is drawn forward; but said pawl slips over the teeth whenever the machine is backed.

rThe free end of the pivoted plow-shaft F is carried at the end of an arm L, whose other end is pivoted on the end of the axle I, which projects outside of the wheel J. This arm acts as a brace and carrier. The free end and the rotary plow A are raised and lowered by an angle-lever N, pivoted at 7c to the frame H. The short arm Z of the angle-lever is connected with the pivotcd shaft F by means IOO shaft carries a sprocket-wheel r, and a smaller sprocket 7" is attached to a sleever2, loose on the axle, while a chain s connects the two. A larger sprocket t is also fixed on the loose sleeve r2, and a chain t' connects therefrom with a smaller sprocket 2 on the pivoted shaft F. It will be seen that the transmission-gear is arranged to impart speed to the plowshaft F.

The action of the plow will be understood by reference to Fig. 2. The ground-surface is indicated by the line u and the depth of the furrow cut by the rotary plow by the line fr. As the earth is cut by the spades c on their upward movement it will be carried over the plow and dumped behind it.

Having thus described our invention, what we claim as new, and desire to secure by Letters Patent of the United States, is-

l. A rotary plow having a circular-shaped cylinder or shell provided on its rim with zigzag formations, and spade plates each of which is secu red with its broad side on a face of one zigzag and with its heel abutting against a face of the next zigzag, whereby a space or pocket to receive earth is formed be tween every two adjoining spade-plates.

2. In a rotary-plow machine the combination of a frame; an axle and running wheels carrying the frame; a revoluble shaft having one end projecting at the side of the machine beyond the running wheel, said shaft being movable up and down at one end only; and a rotary plow mounted on the said projected end of the revoluble shaft.

3. In a rotary-plow machine the combination of a frame mounted on running wheels; a revolublc shaft pivoted so that one end shall be free to bc raised and lowered; a rotary plow mounted on the free end of said shaft and having position outside of or beyond the said running wheel; and a brace and carrierarm attached to the free end of the said revoluble shaft.

4:. In a rotary-plow machine the combination of a frame; a revoluble shaft pivoted so that one end shall be free to be raised and lowered; a rotary plow mounted on the free end of said shaft; a brace and carrier-arm attached to the free end of the said revoluble shaft; and a lever for raising and lowering the said shaft and plow.

5. In a rotary-plow machine the combination of a frame; an axle and running wheels and a gear-wheel, p, on the axle; a sleeve loose on the axle and carrying two gear-wheels; a cross-shaft having two wheels, q, and, r, one connected with the said gear-wheel on the axle and the other with one of the wheels on the loose sleeve; a revoluble shaft, F, having a wheel, lf2, connected with the other wheel on the said sleeve; and a rotary plow connected with said shaft, I?, and having position outside of or beyond the said running wheel.

6. rlhe combination of a frame mounted on an axle and running wheels; a rotary plow carried by said frame and having peripheral spades which form a space or pocket between every two adjoining spades; and gearing transmitting motion from the axle or wheels to said plow whereby the plow will rotate only in a direction opposite that in which the said running wheels turn and the earth cut by the spades will be carried completely over and dumped behind the rotary plow.

In testimony whereof we affix our signatures in the presence of two Witnesses.

DALL VORTHINGTON.`

)HRISTIAN PETERSEN.

IVitnesses:

LEE I. VAN HORN, THos. C. BAILEY. 

